Cairsens H₂S & CH₄S | Real-Time Sulfide Gas Monitoring

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Cairsens® H₂S / CH₄S

H2S/CH4S Micro-Sensor, H2S/CH4S monitoring, odour monitoring

MINIATURE SOLUTION FOR REAL-TIME CONTINUOUS H₂S / CH₄S MONITORING

The Cairsens© sensor allows specific pollutant measurement comparable to reference methods. The high quality sensors are renowned worldwide by our customers looking for the newest technologies in air quality monitoring.

Excellent measurement accuracy is achieved by limiting the effect of humidity interference by using a specific and patented inlet filter combined with dynamic sampling.

H2S / CH4S micro-sensor

Three ranges available: 0 – 1, 0 – 20 or 0 – 200 ppm

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FEATURES AND BENEFITS

H₂S / CH₄S real-time monitoring
Very high sensitivity to capture low level gas concentrations (down to ppb)
Accurate measurement data at a fraction of the cost of Reference Analyzers

No maintenance required during the Cairsens^®’s lifetime
No need for re-calibration during 12 months
Embedded USB and UART / ModBus communication ports
Up to 20 days of 1-minute data storage capacity

Ultra-small, with close to zero power consumption
Ready to use and easy to integrate
Measurements meet European directive 2008/50/EC for indicators

Cairsens^® are manufactured in France and calibrated in our metrological laboratory using Standard Reference AQMS monitors. Every sensor shipped includes a calibration certificate.

MAIN APPLICATIONS

Indoor and outdoor air quality monitoring: smart cities, road-side & tunnels, schools, airports, ship terminals…
Odor monitoring: WWTP, recycling, pulp and paper manufacturing, sewage treatment facilities, refineries

Leak detection and monitoring of fugitive emissions: quarries, storage facilities, mines, manufacturing plants
Providing data for air dispersion modelling

Health and safety: mines, industrial sites, construction
Forecasting of industrial fence line emission

TECHNICAL INFORMATION

Measured Parameter

H2S / CH4S

Article code

A40-0401 | A40-0402 | A40-0403

Measuring Range (ppm)

0 – 1 | 0 – 20 | 0 – 200

Certified* Detection Limit (ppm)

0.01 | 0.03 | 0.2

Resolution (ppm)

0.001

Operating Temperature (°C)

-20 to +40

Operating Relative Humidity (% HR)

10 to 90 (non-condensing)

Sensor Type

Electrochemical

Storage conditions – Temperature (°C)

+5 to +20

Storage conditions – Relative Humidity (% HR)

> 15 (non-condensing)

Storage conditions – Duration of Storage (Max)

6 months

Sampling method

Dynamic air sampling, with a controlled micro-fan

Power supply

5VDC / 500mA, USB port of a PC or Power bank type «Always on» (not provided)

Power consumption

20 mA max under 5 VDC

I/O communications

USB, UART, Modbus RTU-TTL. Modbus RS485 on request (article code A40-0219)

Lifetime duration

24 months

LCD Display

Concentration in ppb or ppm, operating status, memory available…

Control & data treatment

Internal microprocessor for data acquisition and treatment, embedded timer

Data Storage (internal)

20 days for 1 min data, 303 days for 15 min data or 1212 days for 60 min data

Download data mode

– Cairsoft (free download)
– e-SAM DAHS system or Customized integration
– Cairnet® Mini-stations with data exported in the Caircloud®

Weight

55 g

APPROVALS & CERTIFICATIONS

Compliance to environmental regulations

Electrical safety – NF EN 61010-1: 2010
Electromagnetic Compatibility – NF EN 61326-1: 2013
Protection Index – IP 42 (according to IEC 60529)
European directive – 2008/50/EC

Cairsens^® are manufactured in France and calibrated in our metrological laboratory using Standard Reference AQMS monitors. Every sensor shipped includes a calibration certificate.